JPS5721156A - Forced cut-off system for advance call of called party - Google Patents

Forced cut-off system for advance call of called party

Info

Publication number
JPS5721156A
JPS5721156A JP9495380A JP9495380A JPS5721156A JP S5721156 A JPS5721156 A JP S5721156A JP 9495380 A JP9495380 A JP 9495380A JP 9495380 A JP9495380 A JP 9495380A JP S5721156 A JPS5721156 A JP S5721156A
Authority
JP
Japan
Prior art keywords
output
circuit
call
gate
incoming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP9495380A
Other languages
Japanese (ja)
Other versions
JPS647532B2 (en
Inventor
Akira Goto
Seiichiro Kobayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIPPON KEIBI HOSHO KK
Secom Co Ltd
Oki Electric Industry Co Ltd
Original Assignee
NIPPON KEIBI HOSHO KK
Secom Co Ltd
Oki Electric Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=14124298&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPS5721156(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by NIPPON KEIBI HOSHO KK, Secom Co Ltd, Oki Electric Industry Co Ltd filed Critical NIPPON KEIBI HOSHO KK
Priority to JP9495380A priority Critical patent/JPS5721156A/en
Publication of JPS5721156A publication Critical patent/JPS5721156A/en
Publication of JPS647532B2 publication Critical patent/JPS647532B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To transmit information at emergency quickly, even under incoming call of a telephone line, by providing a cut-off means for forcibly advanced call by a party. CONSTITUTION:When an incoming signal comes, an incoming detection relay RG connected in parallel with telephone lines L1, L2 is energized, and output is produced to an incoming signal detection circuit 6 and it is transmitted to an identifying circuit 5. On the other hand, if an emergency is taken place, the output of a start switch 4 started with the operation is sensors 1a-1n is transmitted to the identifying circuit 5. The circuit 5 detects the production of emergency during incoming call and stops the output of a gate G2, and produces the output of a gate G1. The output of the gate G1 drives a line close timer 14-1 of a called party advance call forced cut-off circuit 14 to operate a line closing relay A of a connection line 8, and the lines L1, L2 are opened by virtual response through the forming of a DC loop to the telephone lines L1, L2.
JP9495380A 1980-07-14 1980-07-14 Forced cut-off system for advance call of called party Granted JPS5721156A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9495380A JPS5721156A (en) 1980-07-14 1980-07-14 Forced cut-off system for advance call of called party

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9495380A JPS5721156A (en) 1980-07-14 1980-07-14 Forced cut-off system for advance call of called party

Publications (2)

Publication Number Publication Date
JPS5721156A true JPS5721156A (en) 1982-02-03
JPS647532B2 JPS647532B2 (en) 1989-02-09

Family

ID=14124298

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9495380A Granted JPS5721156A (en) 1980-07-14 1980-07-14 Forced cut-off system for advance call of called party

Country Status (1)

Country Link
JP (1) JPS5721156A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58204664A (en) * 1982-05-24 1983-11-29 Secom Co Ltd Informing device of failure
JPS6243997A (en) * 1985-08-22 1987-02-25 Matsushita Electric Ind Co Ltd Video signal processor
JPH0213352U (en) * 1988-07-06 1990-01-26

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02269054A (en) * 1989-04-11 1990-11-02 All:Kk Marking machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58204664A (en) * 1982-05-24 1983-11-29 Secom Co Ltd Informing device of failure
JPS6337549B2 (en) * 1982-05-24 1988-07-26 Sekomu Kk
JPS6243997A (en) * 1985-08-22 1987-02-25 Matsushita Electric Ind Co Ltd Video signal processor
JPH0213352U (en) * 1988-07-06 1990-01-26

Also Published As

Publication number Publication date
JPS647532B2 (en) 1989-02-09

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